Update caching timestamps in model events

app/models/inbox.rb

@@ -13,6 +13,18 @@ class Inbox < ApplicationRecord
       !user.privacy_allow_anonymous_questions?
   end
 
+  after_create do
+    user.touch(:inbox_updated_at)
+  end
+
+  after_update do
+    user.touch(:inbox_updated_at)
+  end
+
+  after_destroy do
+    user.touch(:inbox_updated_at)
+  end
+
   def answer(answer_content, user)
     raise Errors::AnsweringOtherBlockedSelf if question.user&.blocking?(user)
     raise Errors::AnsweringSelfBlockedOther if user.blocking?(question.user)

app/models/notification.rb

@@ -1,9 +1,21 @@
 # frozen_string_literal: true
 
 class Notification < ApplicationRecord
-  belongs_to :recipient, class_name: "User", touch: :notifications_updated_at
+  belongs_to :recipient, class_name: "User"
   belongs_to :target, polymorphic: true
 
+  after_create do
+    recipient.touch(:notifications_updated_at)
+  end
+
+  after_update do
+    recipient.touch(:notifications_updated_at)
+  end
+
+  after_destroy do
+    recipient.touch(:notifications_updated_at)
+  end
+
   class << self
     include CursorPaginatable
 
@@ -45,7 +57,7 @@ class Notification < ApplicationRecord
 
       n = notification_type.new(target:,
                                 recipient:,
-                                new:       true)
+                                new:       true,)
       n.save!
       n
     end

app/models/subscription.rb

@@ -39,7 +39,12 @@ class Subscription < ApplicationRecord
         { target_id: source.id, target_type: Comment, recipient_id: s.user_id, new: true, type: Notification::Commented, created_at: source.created_at, updated_at: source.created_at }
       end
 
-      Notification.insert_all!(notifications) unless notifications.empty? # rubocop:disable Rails/SkipsModelValidations
+      return if notifications.empty?
+
+      # rubocop:disable Rails/SkipsModelValidations
+      Notification.insert_all!(notifications)
+      User.where(id: notifications.pluck(:recipient_id)).touch_all(:notifications_updated_at)
+      # rubocop:enable Rails/SkipsModelValidations
     end
 
     def denotify(source, target)